sigh. Somewhat like the flying car, and the fusion..

Similar title, 7 years ago: https://news.ycombinator.com/item?id=17108828

Still keep fingers crossed it would make it.

btw, one possible side effect of mass-adoption of this will be that roads will be left to deteriorate and become worse - with much more potholes and what-not - as cars will not need it. Or such will be the excuse..